baber/WOPTO huggingface dataset:
Patent GB-757439-A (GB)
Title: Preamplifier for colour television
IPC: H04N9/07
Filed: 1954-03-23
Abstract: 757,439. Television. RADIO CORPORATION OF AMERICA. March 23,1954 [April 14, 1953; April 29, 1953; May 1, 1953; May 27, 1953], No. 8464/54. Drawings to Specification. Class 40 (3). " Cross-talk " between the different colour output signals of a television pick-up tube of the type in which the component colour signals are derived from a screen electrode composed of a plurality of interleaved conducting strips is minimized by arranging that the effective input impedance of the pre-amplifier for each colour channel is low relative to the cross-coupling impedances (inherent in the tube screen structure and essentially capacitive) between the interleaved strips. The low input impedance for each pre-amplifier may be effected by the employment of a low physical input resistance but, preferably, is achieved by a negative feedback circuit which is resistive over a frequency range of 0-100c/s., essentially capacitive over a range of about 100 c/s.-100 kc/s. and constant and resistive at higher frequencies or essentially inductive and increasing with frequency above a frequency of about 1 Mc/s. By this means " cross-talk " is minimized over the range of the colour signals (0-1 Mc/s.) and noise generated in any one of the pre-amplifiers is coupled through its feedback loop and cross-coupling impedances to the input circuits of the other pre-amplifiers in the output circuits of which it appears in opposite polarity. Cancellation of the noise, in subsequent image reproduction, therefore results. The Specification includes a theoretical discussion of feedback amplifiers and suitable amplifiers are described.
Patent GB-609640-A (GB)
Title: Improvements relating to reinforced, cellular concrete
IPC: B28B1/50
Filed: 1946-03-19
Abstract: 609,640. Reinforced cellular concrete. STRUCTURAL & MECHANICAL DEVELOPMENT ENGINEERS, Ltd., and GOLDBERG, A. March 19, 1946, No. 8524. [Class 20(iv)] Reinforced cellular concrete articles are made by coating the reinforcement with a material which is solid at normal temperatures and softens and flows at elevated temperatures and which adheres to the reinforcement, casting the cellular concrete about the coated reinforcement, then curing the cast mass at an elevated temperature sufficient to soften the coating material and enable it to penetrate into the concrete. The coating, e.g. high melting point bitumen, may be applied by dipping or spraying.
Patent GB-268135-A (GB)
Title: Improvements in fasteners or clips for papers and the like
IPC: B42F1/08
Filed: 1926-03-29
Abstract: 268,135. Saunders, S. E. March 29, 1926. Clips, spring strip or wire. -For holding together a series of papers a clip is formed with wavy or sinuous arms b that are normally in contact and without the extremities being curled back to form rounded ends. The middle of the clip is formed as a loop c and the arms are preferably formed with flattened inner faces. Specification 18863/04, [Class 43, Fastenings, Dress], is referred to.
Patent GB-558321-A (GB)
Title: Improvements relating to loom weft stop motions
IPC: D03D51/34
Filed: 1942-06-23
Abstract: 558,321. Looms. PILLING, T. June 23, 1942, No. 8578. [Class 142 (i)] A weft fork stop motion employing a centre weft fork is provided with a supplementary slide C let into the main slide B and formed with a stop catch C<SP>1</SP> to engage a catch arm d on the pivoted weft fork. The slide C is connected with the main slide B by a spring c<SP>2</SP>, and the amount of its movement in the main slide is determined by a pin-and-sl@  connection. In operation, absence of the weft causes the catch arm d to engage the catch C<SP>1</SP> and stop the supplementary slide, while the main slide continues to move for its full distance determined by stops. The main slide B moves in the weft fork bracket A. and one of the guiding surfaces for the slide is detachable to facilitate removal of the main slide together with the supplementary slide. Specification 500,820 is referred to.
Patent GB-265416-A (GB)
Title: Improved process for preserving or improving foodstuffs and apparatus therefor
IPC: A23L3/3418
Filed: 1926-03-30
Abstract: 265,416. Kirke, P. St. G. March 30, 1926. Preserving food.-Apparatus for use in preserving foodstuffs comprises a chamber a in which a food container f is placed, the chamber having pipes for evacuating it and for charging it with a suitable gas at any desired pressure. A key h or other device is provided for closing a cock or valve g in the opening in the container f, or for dropping a lid thereon so that the container can be closed from outside the chamber after treating the food with gas and before removal. In the construction described, the container f is inserted through an end doorway b, and the key for closing the valve g consists of a rod h having a handle i and sliding in a stuffing-box in the chamber so that it can be raised when the container is being introduced. The air in the chamber can be exhausted through a valve d connected to a pump and a compressed gas, such as carbon dioxide or nitrogen or a mixture of both. admitted through valve e until the desired pressure is indicated by gauge k. If the pressure is to be maintained in the container, the valve g is then closed and the container removed, or the valve d may be opened to reduce the pressure in the chamber or to produce a slight vacuum before closing valve g. The gas used may be dried, and if allowed to expand from a compressor or storage bottle into the chamber will have a cooling effect. To effect sterilization of the food, the chamber may be provided with a jacket c arranged within the chamber or with coils through which a heating medium such as hot water or steam is circulated. Alternatively the chamber or the gas may be electrically heated. A cooling medium may also be passed through jacket c. The opening in the container may also be closed by electromagnetically operated devices for turning the cock therein or for dropping a lid thereon. Where a lid is used ,a slightly reduced pressure may be employed in the container f so as to obtain tight closure.
Patent GB-1073424-A (GB)
Title: Improvements in or relating to methods of making sliding clasp fasteners of the concealed element type
Inventor: SWAINSON ERIC
IPC: A44B19/40
Filed: 1966-03-01
Abstract: 1,073,424. Sliding clasp fasteners. LIGTENING FASTENERS Ltd. March 1, 1966, No. 8895/66. Addition to 948794. Heading E2S. A method of manufacturing sliding clasp fasteners of the concealed element type, comprises, forming two lengths of stringers 15, 15 in which, in each length of stringers, coupling elements 3 are secured to an edge of a length of tape 13 with coupling portions of the elements directed towards the other edge of the tape, locating the lengths of stringers in side-by-side relationship with the coupling elements lying adjacent to one another but not in locking engagement, cutting pairs of recesses 18, 18 in adjacent edges of the stringers to extend over a plurality of elements on each tape, folding the lengths of each tape adjacent the coupling portions of the elements whereby the length of tape not secured to the elements extends away from the coupling portions of the elements, inserting a slider (14), Fig. 5 (not shown) between each pair of recesses and engaging the slider with the coupling elements and securing plastics material and providing end stops upon the lengths of stringers adjacent the recesses either before or after cutting of the recesses or after mounting the sliders on the lengths of stringers. As shown, preformed films 16 of plastics material are fused to the lengths of stringers at intervals corresponding to the lengths of individual fasteners required, and each film is provided with end stops 17. The recesses 18, 18 are formed through the films, the folds in the lengths of stringers are reformed and a slider is inserted between each pair of recesses and engaged with coupling elements at the ends remote from the stops 17. An end stop (not shown) is then provided to the rear of the slider to prevent removal thereof. The lengths of stringers are severed across the recesses intermediate the lengths thereof to produce individual fasteners complete with sliders and end stops.
Patent GB-1217667-A (GB)
Title: Recorder
Inventor: AMIS PETER WILLIAM
IPC: G11B15/26
Filed: 1969-02-19
Abstract: 1,217,667. Tape recorders. A. & M. FELL (MFG.) Ltd. 19 Feb., 1969, No. 8895/69. Heading G5R. A platform 5 supports a freely rotatable spool 22 on which is loosely coiled in a flat spiral the bulk of a lubricated tape loop 24 of which a section, extending between the inner and outer convolutions of the coil, passes through a tape deck 26 mounted on the opposite side of the spool 22 from the platform 5 and having a recording head and a capstan driven by a shaft 15 which extends through an aperture in the hub 21 of the spool 22 from a drive transmission system 10, 12 mounted in the platform 5. The tape transport may be as described in Specification 1,217,669 and the platform 5 may carry on its other side a second recording system 14 driven by the same motor 10, as in the flight recorder described in Specification 1,217,668.
Patent GB-1489747-A (GB)
Title: Agricultural spraying implements
IPC: A01M7/00
Filed: 1975-01-23
Abstract: 1489747 Crop sprayers HUGHES STEEL PRODUCTS PTY Ltd 23 Jan 1975 [27 Feb 1974] 8961/74 Heading AID An agricultural spraying implement, comprising a wheeled vehicle having a chassis supporting a tank connected to pivotable spray arms has a constant positive displacement pump which in use of the implement, is driven from the vehicle wheels via a chain and sprocket system so as to discharge liquid from nozzles on the spray arms at a rate directly related to the ground speed of the vehicle. In the embodiment shown, two spray arms 11, pivotably mounted on the chassis, are supported in the operative position (Fig. 3) by cables 14, 15. In the inoperative position (Fig. 2) the spray arms 11 are folded to lie alongside the tank 16. The pumping rake may be varied by the use of different diameter sprocket wheels 20 on the pump driving shaft 19.
Patent GB-321578-A (GB)
Title: Improvements in water-heating devices for gas-stoves
IPC: F24C13/00
Filed: 1928-12-27
Abstract: 321,578. Mayer, A. Dec. 27, 1928. Gas cooking-stoves; hot-plates; heat-concentrators; waterheaters, arrangement of.-In gas cooking- stoves having waterheating passages associated with the hotplate, the hot-plate is formed in sections 4 each having a conduit 3 arranged concentrically with the burner, and consisting of a passage of rectangular section cast or formed with the hot-plate, or of a pipe formed into one or more coils; the conduits are connected to one another and to water supply and discharge devices. As shown in Fig. 6, the cast conduit may project above, or above and below, the hot-plate to form a heat-concentrator for utensils, which fit into or rest upon the upwardly projecting portion. Radial depressions 10 in the upper surface form flues, or radial passages may be formed in the conduit for the same purpose. The conduit may be formed with branches projecting into the central circular space.
Patent GB-325724-A (GB)
Title: New or improved apparatus for bringing liquids and gases into intimate contact
IPC: B01D47/16
Filed: 1929-03-21
Abstract: 325,724. Piggott & Co., Ltd., T., Markin, J. W., and Banford, F. E. March 21, 1929. Gases, treating with liquids.-Gas is washed by passage through a casing a containing a concentric rotatable drum h divided into two or more concentric chambers by one or more internal drums j rotating with it; the gas passes through opposite ends alternately of the drums so that it flows successively from the outer to the inner chambers, whence it is withdrawn through a hollow boss, water flowing in the opposite direction. Gas enters at c and passes through openings m, n, o in the internal drums, while water is introduced by a pipe in the hollow boss p and is withdrawn at d. The upper part of the casing a is built of readily removable segmental sections. The gas may be bubbled through the liquid on entering for the separation of tar &c. The outer casing a and drum h carry brushes l, and the inner drums carry brushes l, wood balls, or canvas screens.
Patent GB-1413595-A (GB)
Title: Production of alloy steels
IPC: C21C7/068
Filed: 1973-02-23
Abstract: 1413595 Refining alloy steels STAHLWERKE SUDWESTFALEN AG 23 Feb 1973 [24 Feb 1972] 9117/73 Heading C7D An alloy steel melt, preferably one containing chromium or chromium and nickel, is vacuum decarbonized by blowing with an oxidizing gas down onto the surface of the melt with a mean impact energy per unit volume of less than 2Kp/sq metre. The mean impact velocity is preferably below 5 metres/sec. Preferred apparatus, Fig. 1 comprises a vacuum chamber 10 exhausted through pipe 15. The melt is contained in a ladle 20 and agitated with inert gas issuing from nozzle 21. An oxygen lance 12 extends through cover 11 and is vertically moveable to alter the distance of its exit end above the surface of the melt.
Patent GB-1371392-A (GB)
Title: Methods of drying crop
IPC: F26B25/00
Filed: 1972-02-28
Abstract: 1371392 Conveyers for particulate material C VAN DER LELY NV 28 Feb 1972 [3 March 1971] 9136/72 Heading B8A [Also in Division F4] In Figs. 1 and 3, successive loads of crop are delivered by a wagon through doors 7 on to an endless conveyer 17 moving over a perforated floor 12 to convey the crop to a tined endless conveyer 26 which picks up the crop in batches and discharges it to fall on to a transverse endless conveyer 27 which feeds the crop into a duct 33 supplied with hot air (40-100‹ C.) which conveys the crop upwards and forwards to a bifurcated outlet 39 in the top of the drying chamber 1, the hot air passing downwards through the crop in the chamber 1 and exiting through the perforated floor 12. The outlet 39 is provided with a flap 43 pivotable to close the front outlet port 41 when the doors 7 are open for the introduction of crop and to close the rear outlet port 40 when doors 7 are closed. When the crop is dry, the air heater 45 is switched off and a flap 47 is moved within the air duct 33 to open a branch 46 leading to a store (not shown) to which the fan 44 blows the crop. An extension 48 may be utilized to increase the capacity of the device.  Endless conveyer 17 comprises sprockets 14 and a pair of chains 15 connected by transverse U-section members 16, the upper run moving over the perforated wooden floor 12, and the lower run moving over a wooden plate 6 and discharging dust at the front of the chamber. Conveyer 17 is driven by an electric motor. Endless conveyer 26 comprises laterallyextending rows of hooked tines 25 carried by one or more belts 24 trained around rollers 23, 26A, 27A, and is driven by the same motor. Endless conveyer 27 comprises chains 29 interconnected by spaced members 28 and engaging sprockets 30. The conveyer 27 extends at one end into the duct 33, a pivoted flap resting on the conveyer 27 to reduce air leakage from the duct 33. In Fig. 7, the conveyer 26 is replaced by three rotary members 49 each comprising a transversely extending support carrying tines 57 which are caused to project through slots in the grating 53 according to the angular position of the member 49 by means of a rod-and-spring overcentre arrangement.  In another embodiment. Fig. 13, the floor 12 is inclined upwardly and rearwardly, and the plate 6 is omitted. The conveyer 27 is sealed to the chamber 1 by resilient flaps. The conveyer 26 is replaced by a transverse member 99 carried by arms on a shaft 100 and carrying tines 102 and pins 101B. The air stream from the duct 33 passes through a single outlet into the chamber 1 but is deflectable by a flap in the chamber to permit loading. In a modification, the conveyer 26 is replaced by a rotatable tined member comprising two aligned arms at opposite ends of the rotary shaft and screen plates lagging behind the member to form two troughs.
Patent GB-139659-A (GB)
Title: Improvements in change speed gears
IPC: F16H31/00
Filed: 1919-04-11
Abstract: 139,659. Rees, T. A. April 11, 1919. Ratchet gearing comprises levers K which oscillate with variable swing about the centres of disks M and drive these disks through one-way friction grips L shown on the left half of Fig. 1. The grips L are operated 'by levers h from pneumatic cylinders d so controlled by spherical valves c, Fig. 3, as to bring the grips L into action during the middle half of each swing of a lever K. Air for operating the grips passes from chambers b, Fig. 3, along jointed reciprocated rods Z to the valves c. To reverse the drive, the valves c are operated by turning the rods Z by way of linkwork X, V, U, T from a slotted link P rocked about a pivot R from the shaft C.
Patent GB-980486-A (GB)
Title: Improvements in or relating to sewing machines suitable for use in sewing together an upper and sole member of a shoe
IPC: D05B15/00
Filed: 1961-03-14
Abstract: 980,486. Welts &c. butting. BRITISH UNITED SHOE MACHINERY CO. Ltd. March 14, 1961 [March 15, 1960], No. 9204/61. Addition to 811,605. Heading A3B. [Also in Divisions D1 and H2] In a sewing machine adapted to sew together a shoe upper, an insole and a welt, the latter is severed by means operated when an electro-magnetic device is energized via switch means which are rendered effective by means associated with a stitch setting device. The machine is similar to that described in the parent Specification. When the welt is to be sewn around the shoe with the ends abutting, a selector switch is set with an element 144 engaging a contact SS, and the feeler 12 engages the front end of the welt to close a switch 28 which is not, as in the parent case, in the circuit of the solenoid 20 operating the knife 14, but in a second circuit which includes a relay K3 having normally open contacts K3B in the circuit of solenoid 20. The control circuits are supplied via a switch LS1 which is closed while the machine is running, and a switch LS2 which is closed by a treadle 94 when the latter is depressed to start the machine. A few stitches before severing is to occur, a knee pad 30 is operated to close a switch 26, whereby a solenoid 112 is energized, via a closed element 145 of the selector switch, to position feeler 12 adjacent the welt and a relay K1 is also energized to close contacts K1B in the circuit of switch 28. Contacts K5A in the latter circuit are closed when a relay K5 is energized, energization of relay K5 being maintained, Division D1, as long as the needle thread is intact and the stitches are being correctly set. Closure of switch 28 by feeler 12 thereby energizes relay K3 to close contacts K3B for energizing the knifeactuating solenoid 20. Closure of contacts K3B also energizes a relay K4 which, after a delay, closes contacts K4A to energize a relay K2. The latter then opens contacts K2A for de-energizing the feeler-positioning solenoid 112, and also opens contacts K2B for de-energizing the knife-actuating solenoid 20. Specification 418,823 is referred to.
Patent GB-993155-A (GB)
Title: Improvements relating to thermo-electric devices
Inventor: SHIELDS JOHN
IPC: H01L35/16
Filed: 1962-03-09
Abstract: 993,155. Thermo-electric materials. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Jan. 21, 1963 [March 9, 1962], No. 9211/62. Heading H1K. In preparing a thermo-electric element the basic material (e.g. lead telluride or germanium telluride) is pre-cast and then crushed and ground into a fine powder to which is added a small quantity of iron powder or other suitable material, the whole being thoroughly mixed to form a homogeneous mass by pressing. The latter may be a hot pressing process, but hydrostatic pressing followed by sintering is preferred. The mechanical properties of the material are improved by this process, and the presence of the iron powder causes the increase in resistivity, which would otherwise occur, to be less pronounced.
Patent GB-816162-A (GB)
Title: Improvements in or relating to circuit arrangements for setting routing selectors intelecommunications installations
IPC: H04Q3/00
Filed: 1957-03-20
Abstract: 816,162. Automatic exchange systems. SIEMENS & HALSKE A.G. March 20, 1957 [March 20, 1956], No. 9214/57. Class 40 (4). In a single-motion group selector which advances to the beginning of an outlet group to be searched under the control of a common marker, if no idle outlet is found in the group initially marked the marking is transferred to the beginning of another group which constitutes an alternative route. Upon seizure of the group selector RW, it becomes associated by relay K (not shown) with a common marker in which relay An energizes. The setting digit is transmitted in code form by the connection of ground, resistance ground or battery to wires m, n to operate relays Ua ... Ud in various combinations. These relays are arranged to mark the starting positions of the outlet groups in bank f, for example Uc if operative alone marks position R1. The operative marking relays lock in series with W which starts the selector. When the marked position is reached B, Bh pull up and operate G which opens the marking circuit so that B, Bh go back and test relay P is connected to test wiper c. Relay Gh operates in series with G. If no idle outlet is found, B, Bh pull up again in the last position of the group, G falls back and Y energizes and transfers the marking to the beginning of an alternative group. Relays B, Bh, Gh relapse and the selector searches this group in the same way. If again no idle outlet is found, the repeated series of operations results in the operation of Z in the last position of the alternative group, and the marking is now transferred to the beginning R10 of the final group, which serves as an overflow for all the other groups. If this too is found busy, relay A operating in the last position gives a busy signal and releases the common marker. A modification (Fig. 2, not shown) differs mainly in that relays Y, Z are controlled over the c wiper.
Patent GB-843568-A (GB)
Title: Valve
IPC: F16K3/26
Filed: 1958-03-21
Abstract: 843,568. Screw conveyers. ALLIS-CHALMERS MANUFACTURING CO. March 21, 1958 [March 22, 1957], No. 9228/58. Class 78 (1). [Also in Group XXIX] A valve, particularly for use in a grain handling system, comprises a tubular housing element 8 and a sleeve 26 mounted telescopically and rotatably within it, the sleeve being closed at the end 27 and having a side aperture 31, and the housing having a side aperture 9, the arrangement being such that in the operative position, Fig. 3, the sleeve has been rotated to bring the apertures into register and in the inoperative position, Fig. 1, turned through 180 degrees therefrom. Accidental starting of the screw conveyer 6 feeding material through the valve results in the axial movement of the sleeve to the position shown in Fig. 4 in which the aperture 9 is partly opened and a further outlet is provided between the edge of the aperture 31 and the end of the housing 8, thus preventing damage to the valve by the material. When the machine is stopped and the material cleared from the sleeve 26, the sleeve is returned by hand to the position shown in Fig. 1. A sack to be filled is attached to the spout 24. A handle 33 is fixed to the disc 27 which closes the end of the sleeve 26. Specification 767,049 is referred to.
Patent GB-164896-A (GB)
Title: Improvements in or connected with portable conveyors or elevators
IPC: B65G37/00
Filed: 1920-03-31
Abstract: 164,896. Johnson, A., and Mills, S. March 31, 1920. Directing and adjustably supporting endlessbelt conveyers; feeding-devices.-A portable conveyer for transferring material from a heap to a railway wagon, barge, &c., comprises an endless belt conveyer A mounted on a wheeled framework 2 and an endless belt conveyer A<1> which has guide-wheels 4, runners or slides working on the framework of the lower conveyer. The conveyer A<1> is held in any position by a rope 7 connected to winding-mechanism 8, and is lowered periodically so that its lower end is always in contact with the heap of material.